# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""
"""求输入数字的平方，如果平方运算后小于 50 则退出。"""

leap = 1
i = int(raw_input("input number: "))
if (i*i) < 50:
    print False
    leap = 0

if leap == 1:
    print i*i
